Java 7 required payment for support for four years before the license change [1]:
> The price is $25 per month per processor for servers and cloud instances, with volume discounts available. ... The previous pricing for the Java SE Advanced program cost $5,000 for a license for each server processor plus a $1,100 annual support fee per server processor, as well as $110 one-time license fee per named user and a $22 annual support fee per named user (each processor has a ten-user minimum).
So from (1,100 + 22 * 10) per year per processor + (5,000 + 110 * 10), the cost went down to $300 per processor per year (no one-time fee, no per-user license). That's a >4x drop in price (of course, there were, and are, various bulk discounts, but it's a big price reduction nonetheless).
[1]: https://www.infoworld.com/article/3284164/oracle-now-require...